On paper the Carrera S should have the advantage considering it has more power and its 3332 pound curb weight is just slightly lighter than the 3380 of the i8. The main area of advantage the i8 has is that the electric torque comes on instantly off the line and with its all wheel drive that should on paper allow the i8 to get a lead from a stop courtesy of the 100 lb-ft torque advantage. The Carrera S should then catch and pass it.

How does it play out in practice? It's an easy beatdown. Considering the standard 991 Carrera S is already quicker and faster than the i8 the Powerkit just makes the gap larger. The i8 is an awesome technological achievement but it is not a replacement for the Porsche 911 or the traditional sports car. At least not yet.